École nationale des ponts et chaussées

Optimal Vaccination Strategies for a Heterogeneous SIS Model

Abstract. We study in a general mathematical framework the optimal allocation of vaccine in an heterogeneous population. We cast the problem of optimal vaccination as a biobjective minimization problem [Formula: see text], where [Formula: see text] and [Formula: see text] stand,...

Urban transit experimentation as a mega-event legacy: public security in railway stations at the Paris 2024 Olympic Games

The urban sites of sport mega-events, such as the World Cup or the Olympic and Paralympic Games, have become stages for experimenting with extraordinary security and safety procedures. These procedures are designed to demonstrate the host country’s capacity to mobilize in the fac...